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JAMB Physics 2010 Question 48

Question 48

Electronics

Transistors are used for the

  1. A.conversion of a.c. to d.c.
  2. B.conversion of d.c to a.c.
  3. C.amplification of signals.
  4. D.rectification of signals.
Show the answer and explanation

Answer: C (amplification of signals.)

Explanation

A small base current controls a much larger collector current, so a transistor amplifies signals. Rectification is done by diodes.